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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug analyzer/100615] New: analyzer failed to report leak in
 rxtxcpu's parse_cpu_list
Date: Sat, 15 May 2021 18:23:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100615

            Bug ID: 100615
           Summary: analyzer failed to report leak in rxtxcpu's
                    parse_cpu_list
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: analyzer
          Assignee: dmalcolm at gcc dot gnu.org
          Reporter: dmalcolm at gcc dot gnu.org
  Target Milestone: ---

clang's static analyzer found this leak on an error-handling path:
  https://github.com/stackpath/rxtxcpu/pull/42
which gcc's -fanalyzer failed to report.

Looking at the code, I see that the string is passed to strsep and to strto=
l,
which IIRC the analyzer doesn't have special knowledge of (perhaps the anal=
yzer
is conservatively assuming that these could free the string?)=